beeman



(No Model.)

W. s. BBEMAN. OILER POR WRIST PINS.

Patented Sept. 14, 1886.

@mth/twee@ 51.111 anto;

UNITED STATES PATENT OFFICE.

VILLIAM. S. BEEMAN, OF ASHLAND, WISOONSIN ASSIG-NOR OF ONE-HALF TO BlRG-E IV. DAVENPORT, OF SAME PLACE.

OILER FOR WRIST-PINS.

SPECIFICATION forming part of LettersPatent No. 349,137, dated September 14, 1886.

Application led April 15, 1886. Serial No. 198.889.

T0 all whom t may concern:

Beit known that LWTLLTAM S. BEEMAN, a citizen of the United States, residing at Ashland, in the county of Ashland and State-of Visoonsin, haveinvented certain new and useful Improvements in Oilers for Wrist-Pins; and I do declare the following to be a full, clear, and 'exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,.refer ence being had to the accompanying drawings, and to the letters and figures ot' reference marked thereon, which form a part of this specication.

My invention relates especially to that class of lubricators which are attached to the cranks of steam-engines, and which are so arranged that the revolution of the crank will operate the lubricator and cause it to feed the lubricant to the crank.

It consists in certain novel features herein-A after described, and pointed out in the claims.

In the accompanying drawings Ihave shown in Figure l a side elevation of my device as applied to a crank. Fig. 2 is a central vertical section. Fig. 3 is a plan View, and Fig. 4 is an enlarged detail view.

Referring to the drawings byletter, A designates the cylinder which holds the lubricating material. It is provided at its lower end with a screw-threaded nozzle, A', which is screwed into the pitman-head, thereby securing the lubricator in position, and is made of such a length that when screwed home it will just touch the crank, as clearly shown in Fig. 2. This cylinder A is provided with a top or cover, A2, which is held upon it by set-screws A3. A piston, B, working in the cylinder, is provided with a screw -threaded piston -rod, B', which works through the cover A2, and is provided at its upper end with a hand-wheel, B2, by `means oi' which the piston is raised when so rdesired, as will be hereinafter fully described.` A plate, C, provided with two up- 'right posts, C', is secured upon the top of the cover Az by screws or other similar means, and a worm-gear, I), is journaled in these posts. This worm-gear shaft I) is extended at one end, and upon this end extension I rigidly secure a ratchet-wheel, E. A sleeve, F, provided with an arm, F', is loosely mounted (No model.)

upon this worm-gear shaft in juxtaposition to the ratchet-Wheel E, the arm F extending out past the circumference of the wheel. A pawl, Fl, is pivoted upon the arm F near its outer L end, and is held in engagement with the ratchet-wheel by a spring, F, secured 'upon the aforesaid arm F and bearing upon the pawl F2. Pivot-ally secured to the end of the arm F is one end of the operating-lever G. The other end of the operating-lever G is connected to a slotted yoke, H, which is rigidly secured to the crank by set-screws passed through its ends. The lever G is secured .to the yoke H by a bolt passed through the end v of the lever and the slot of the yoke.

The worm-gear D, hereinbefore mentioned, meshes with two worm-wheels, I J, which are secured upon the piston-rod B in the manner now to be described. The piston rod B is provided with a groove which extends its entire length. The wheel I has a loose center, I', which is provided with a key or rib, I, fitting into the groove in the piston-rod. The wheel I is held to the center I and the center to the piston-rod by a set-screw, l, as shown. The worm-wheel J is provided with an internal screw-thread, which, engaging t e screwthreaded piston-rod, holds the worm-wheel J in position. The worm-wheels I J are sup- 8c ported by the cover, and are prevented from slipping' laterally, and thereby becoming disengaged from the worm-gearl), by an annular shoulder, K, on the top of the cover A2, which receives the centrally-raised portion j of the 85 -worm-wheel J, which rests upon this shoulder,

the wheel I resting upon the wheel J. A triangular plate, Il, rests upon the'wheel I and prevents the Worm-wheels moving upward. Two of its points, L L2, rest upon and are se- 9o cured to the posts C'C. The third point, La, is securedto the cover A2 by a bolt passed through the said point and the cover. The two worm-wheels I J are of different sizes,v the wheel I having thirty-nine teeth andthe 9 5 wheel J having forty teeth.

In operation the revolution of the crank will impart a circular motion to the upper end of the operating-lever, which motion will be communicated to the ratchet-wheel E through Io the pawl F2. The wheel E being rigidly secured to the worin-gear shaft, the movement of the said ratchet-wheel will canse thewormgear to revolve. which, meshing with the worm-wheels I J, will feed the piston B l'orward and force the lubricant out through the nozzle A onto the crank. The pistoirrod B lits loosely in the piston l), and is moved l'orward through the combined action ofthe gears I J. As hereinbefore mentioned, the gear I has thirty-nine teeth, andthe gear .I has forty teeth. .The gear-wheel I, having but thirtynine teeth, will revolve faster than the gearwheel having forty teeth, and the result is, that the piston-rod B is screwed through the gearwheel J to the extent ol' one-fortieth of a turn of the thread in every complete revolution of the two gears. Thus it will be seen that the gearJ will gain one tooth during every complete revolution of the two gears, and the piston will move forward a distance equal to onefortieth of a complete turn of the piston-rod. By loosening` the set-screw 13 and turning the hand wheel B, the piston will rapidly be raised when it is desired to refill the cylinder, and when the piston has reached its lowest point. In lubricators of the class to which mine belongs the lubricating material is generally a thick grease, and it is desirable that the piston should have a slow motion, in order to feed the proper amount ofthe lubricant to the crank. This slow motion I obtain through the mechanism hereinhclore described.

Having thus described myinvention, what l claim, and desire to secure by Letters lalent, is-

l. In a lubricalor, the combination, with the driving mechanism and the feeding-piston having a screw l ln'eaded piston-rod provided with a groove running its entire length, of two diil`erentsized \\'orm-\\heels meshing with the driving mechanism and secured tothe piston-rod, Idie larger by an internal screwthread and the smaller by a set-screw and keyed center, substantially as set forth.

2. The combination, with the pitman and the crank, ofthe lubricator secured upon the pitman by a screw-threaded nozzle, which extends through to the crank, the operating mechanism secured upon the top of the cylinder, consisting ol the worin-wheels I and J', and the worm D, having an extended shaft, a ratchet-wheel secured upon the extended portion ofthe worm-shaft, a sleeve mounted upon the same shaft in juxtaposition to the ratchetwheel, and having an arm extended past the ratchet-wheel, a pawl pivoted to this arm and held in engagement with the ratchet-wheel by a spring secured to the arm and bearing upon the pawl, and a driving-lever pivotally secured at one end to the end oi' the arm carrying pawl, and having its other end secured to the crank by a slotted yoke, substantially as speciiied.

3. The combination, with the cylinder, the feeding-piston, and the driving mechanism comprising a worm-gear shaft and two wormwheels meshing therewith, of a plate, (l, having two posts, C G, in which the wormgear isjournaled, and a triangular plate, L, resting upon the gear-wheels secured to the top and the posts l!" G, and the top having an annular rib, upon which the gear-wheels rest, substantially as described and shown.

'ln testimony whereol I allix my signature 'in presence ol two witnesses.

TlLLlQiM S. BEEIAN. 

